French-Swiss border
The France–Switzerland border (German: Grenze zwischen Frankreich und der Schweiz, French: Frontière entre la France et la Suisse, Italian: Confine tra la Francia e la Svizzera) is 572 km long. Its modern boundaries are mostly the product of the Congress of Vienna of 1815, with the accession of Geneva, Neuchatel and Valais to the Swiss Confederation, but it has since been modified in detail, for the last time (as of 2013) in 2002.
The tripoint where it meets the Swiss-German and Franco-German borders is in the river Rhine (at 47°35′23″N 7°35′20″E / 47.5898°N 7.5890°E) at Basel. A monument has been built near it, known as the Dreiländereck. Its other end is at the tripoint with the French-Italian and Swiss-Italian borders (at 45°55′22″N 7°02′39″E / 45.9227°N 7.0441°E) on around 3,700 metres (12,100 ft) altitude, near Mont Dolent.
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